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Guo S, Li K, Chen Y, Li B. Unraveling the drug distribution in brain enabled by MALDI MS imaging with laser-assisted chemical transfer. Acta Pharm Sin B 2022; 12:2120-2126. [PMID: 35847487 PMCID: PMC9279630 DOI: 10.1016/j.apsb.2021.11.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Revised: 10/24/2021] [Accepted: 11/03/2021] [Indexed: 12/15/2022] Open
Abstract
Accurate localization of central nervous system (CNS) drug distribution in the brain is quite challenging to matrix-assisted laser desorption/ionization (MALDI) mass spectrometry imaging (MSI), owing to the ionization competition/suppression of highly abundant endogenous biomolecules and MALDI matrix. Herein, we developed a highly efficient sample preparation technique, laser-assisted chemical transfer (LACT), to enhance the detection sensitivity of CNS drugs in brain tissues. A focused diode laser source transilluminated the tissue slide coated with α-cyano-4-hydroxycinnamic acid, an optimal matrix to highly absorb the laser radiation at 405 nm, and a very thin-layer chemical film mainly containing drug molecule was transferred to the acceptor glass slide. Subsequently, MALDI MSI was performed on the chemical film without additional sample treatment. One major advantage of LACT is to minimize ionization competition/suppression from the tissue itself by removing abundant endogenous lipid and protein components. The superior performance of LACT led to the successful visualization of regional distribution patterns of 16 CNS drugs in the mouse brain. Furthermore, the dynamic spatial changes of risperidone and its metabolite were visualized over a 24-h period. Also, the brain-to-plasma (B/P) ratio could be obtained according to MALDI MSI results, providing an alternative means to assess brain penetration in drug discovery.
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Ketola RA, Kriikku P. Drug concentrations in post‐mortem specimens. Drug Test Anal 2019; 11:1338-1357. [DOI: 10.1002/dta.2662] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Revised: 06/10/2019] [Accepted: 06/11/2019] [Indexed: 01/20/2023]
Affiliation(s)
- Raimo A. Ketola
- Forensic Toxicology UnitNational Institute for Health and Welfare (THL) Mannerheimintie 166 FI‐00270 Helsinki Finland
| | - Pirkko Kriikku
- Forensic Toxicology UnitNational Institute for Health and Welfare (THL) Mannerheimintie 166 FI‐00270 Helsinki Finland
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Rollins BL, Morgan L, Hjelm BE, Sequeira A, Schatzberg AF, Barchas JD, Lee FS, Myers RM, Watson SJ, Akil H, Potkin SG, Bunney WE, Vawter MP. Mitochondrial Complex I Deficiency in Schizophrenia and Bipolar Disorder and Medication Influence. MOLECULAR NEUROPSYCHIATRY 2017; 3:157-169. [PMID: 29594135 DOI: 10.1159/000484348] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Accepted: 10/16/2017] [Indexed: 12/22/2022]
Abstract
Subjects with schizophrenia (SZ) and bipolar disorder (BD) show decreased protein and transcript levels for mitochondrial complex I. In vitro results suggest antipsychotic and antidepressant drugs may be responsible. We measured complex I activity in BD, SZ, and controls and presence of antipsychotic and antidepressant medications, mitochondrial DNA (mtDNA) copy number, and the mtDNA "common deletion" in the brain. Complex I activity in the prefrontal cortex was decreased by 45% in SZ compared to controls (p = 0.02), while no significant difference was found in BD. Complex I activity was significantly decreased (p = 0.01) in pooled cases (SZ and BD) that had detectable psychotropic medications and drugs compared to pooled cases with no detectable levels. Subjects with age at onset in their teens and psychotropic medications showed decreased (p < 0.05) complex I activity compared to subjects with an adult age at onset. Both SZ and BD groups displayed significant increases (p < 0.05) in mtDNA copy number compared to controls; however, common deletion burden was not altered. Complex I deficiency is found in SZ brain tissue, and psychotropic medications may play a role in mitochondrial dysfunction. Studies of medication-free first-episode psychosis patients are needed to elucidate whether mitochondrial pathophysiology occurs independent of medication effects.
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Affiliation(s)
- Brandi L Rollins
- Functional Genomics Laboratory, Department of Psychiatry & Human Behavior, University of California, Irvine, CA, USA
| | - Ling Morgan
- Functional Genomics Laboratory, Department of Psychiatry & Human Behavior, University of California, Irvine, CA, USA
| | - Brooke E Hjelm
- Functional Genomics Laboratory, Department of Psychiatry & Human Behavior, University of California, Irvine, CA, USA
| | - Adolfo Sequeira
- Functional Genomics Laboratory, Department of Psychiatry & Human Behavior, University of California, Irvine, CA, USA
| | - Alan F Schatzberg
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA, USA
| | - Jack D Barchas
- Department of Psychiatry, Weill Cornell Medical College, Ithaca, NJ, USA
| | - Francis S Lee
- Department of Psychiatry, Weill Cornell Medical College, Ithaca, NJ, USA
| | - Rick M Myers
- HudsonAlpha Institute for Biotechnology, Huntsville, AL, USA
| | | | - Huda Akil
- MBNI, University of Michigan, Ann Arbor, MI, USA
| | - Steven G Potkin
- Department of Psychiatry & Human Behavior, University of California, Irvine, CA, USA
| | - William E Bunney
- Department of Psychiatry & Human Behavior, University of California, Irvine, CA, USA
| | - Marquis P Vawter
- Functional Genomics Laboratory, Department of Psychiatry & Human Behavior, University of California, Irvine, CA, USA
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Simultaneous Determination of Methadone, Fluoxetine, Venlafaxine and Their Metabolites in Rat Plasma by UPLC–MS/MS for Drug Interaction Study. Chromatographia 2016. [DOI: 10.1007/s10337-016-3062-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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